Re: Clean signal but stale programming
I think your range is off; missing a zero, perhaps (2550)?
I fired up my tone generator app for some empirical data. 85 Hz is just beyond my singing range. I can easily do an octave up (170) and even two (340). My daughters could take the next two (680, 1360) no sweat, and maybe even squeak out 2720 non-sustained. (And that's not counting natural harmonics/overtones!)